Electrical controller



(No Model.)

W. H. MORGAN.

7 Sheets--Sheet 1.

ELECTRICAL CONTROLLER.

Patented Jan. 19, 1897.

(No Model.)

7 Sheets-Sheet 2. W. H. MORGA ELECTRICAL CONTRO No. 575,866. Patented Jan. 19, 1897.

7 sheets-'sheet 4.

(No Model.)

W H MORGAN ELECTRICAL CONTROLLER.

4Patented Jan. 19, 1897.

(No Model.) Sheets-Sheet. 5. W. H. GA -BLBGTRICA TRD l No. 575,366. Patentad Jan. 19, 1897.

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(No Model.) 7 Sheets-Sheet 6. W H MORGAN ELECTRICAL CONTROLLER.

Patented Jan. 19, 1897.

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(No Model.) 7 sheets-sheet 7.

W. H. MORGAN."

ELECTEICAL CONTROLLER. No. 575,366. Patented Jan. 19, 1897.

Wifgesses 3N MMM J. 07M @www M y www UNITED STATES PATENT OFFICE.

lVIIiIiIAM HENRY MORGAN, OF ALLIANCE, OHIO.

ELECTRICAL CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 575,366, dated January 19, 1897'.

Application lefl September 4,1895.

Be it known that I, WILLIAM HENRY MOR- GAN, a resident of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Electrical Controllers, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in controllers for electric motors, one object of the invention being to produce an electric controller-viz., a combined rheostat and reversing switchof compact construction, which shall be capable of operation with currents of large voltage without inj uriously affecting the working parts, and which can be easily operated by the movement of a single lever, in one direction or the other, to reverse the current through the armature-circuit and gradually cut the resistance first out of the circuit and then into the circuit.

A further object is to produce an electrical controller which shall be so constructed that ample provision will be made for ventilation.

A further object is to produce a controller for electric motors which shall be simple, strong, and comparatively light in construction and which shall be effectual in all respects in the performance of its functions.

IVith these objects in View the invention consists in certain novel features of construction and combinations and arrangements of parts, as hereinafter set forth, and pointed out in the claims.

In the accompanying drawings, Figure lis an elevation showing the contact-plates and switch-arm of the rheostat. Fig. 2 is an elevation showing the opposite face of the machine and the reversing-switch. Fig. 3 is an elevation with one side of the frame removed, showing the arrangement of the resistancecoils. Fig. 4. is an inner face view of the other part of the frame. Figs. 5 and 6 are detail views of a coil and the plate or wedge to which it is connected. Fig. 7 is a diagram illustrating the circuits. Figs. S and 9 are views illustrating a modification.

A represents a frame or shell made in two parts A A2, each part or half being made with perforated lugs a for the accommodation Serial No. 561,455. (No model.)

of bolts b, whereby to secure the parts of the frame or shell together.

The sides of the frame or shell A, and also the ends and curved top, are made with openings a b' c5 to permit an ample circulation of air through the controller for purpose of ventlation. The central portion of each part of the frame or shell is made in the form of spokes d., with intervening spaces CZ/ for the admission of air, said spokes radiating from central hubs (Z2, wh'ch constitute bearings for a transverse shaft 1, the purpose of which will be hereinafter explained.

Vithin the shell A and adjacent to the respective parts A A2 thereof concentric rings 2 2 are disposed and connected together at intervals by means of curved plates or con nectors 3, made integral with the respective rings 2. rlhe annular frame thus formed constitutes a support for a series of resistance-coils B and the plates or wedges B to which said coils are attached.

The coils B are preferably arranged in two semicircular sets with gaps or spaces between their respective ends, and the coils of each set are electrically connected in series, as will be apparent from the following detail description of their construction and arrangement:

Each coil B is preferably composed of metallic ribbon, suoli as German silver, with asbestos,y mica, or other suitable insulating material interposed between its convolutions. The inner end of each coil is electrically connected to a hub or boss 4, which may be either round or angular, projecting from one face of a plate or wedge B', which latter is made with lugs 5 6, adapted to bear against one face of the coil, but electrically insulated therefrom, and with a lug 7, adapted to bear against, butinsulated from, the adjacent coil, thus maintaining the coils B properly spaced apart and forming ventilating-spaces between them. Each plate or wedge B is also made with a laterally-projecting split ear 8 for the reception of the free or outer endl) of the adjacent coil, each coil having been previously bound with a wire lO and the end 9 left projecting from the body thereof. From this construction and arrangement of parts it will be seen that as the inner end of each coil is electrically connected with a plate or Wedge B and its outer end electrically connected with IOO shaft, and a rack on the lever, cooperating with said pinion to operate the switch-arm of the variable resistance, substantially as set forth.

2. In an electrical controller, the combination of a series of Wedges or plates, a hub or projection on each plate or Wedge, a binding post or arm on each plate or Wedge, a resistance having insulating material interposed between its convolutions, coiled on each hub or projection and electrically connected thereto, the free ends of the coils being connected with the binding posts or arms of the adjacent plates or Wedges, and lugs on the plates or Wedges bearing against the coils for spacing them apart, substantially as set forth.

3. In an electrical controller, the combination with an open main frame, of an annular open frame within the main frame, and an annular series of resistance-coils spaced apart and supported on said annular open frame, substantially as set forth.

et. In an electrical controller, the combination with a main frame made in two parts and having Ventilating-opening therein, of an annular open frame disposed between the parts of the main frame and a series of resistancecoils supported on said annular frame, substantially as set forth.

5. In an electrical controller, the combination with a frame, of trays of insulating material mounted thereon7 contact-plates located on said trays, a shaft, a hub mounted on the shaft, contact-arms projecting from said hub and cooperating with the contact-plates to produce a reversing-switch, a Variable resistance, a switch-arm therefor secured to said shaft, and a lever adapted to turn the shaft and operate the reversing-switch at a single movement in either direction from its normal position, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

WILLIAM HENRY MORGAN.

Witnesses:

E. WOOLGAR, W. H. RAMSEY. 

